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Finding the Fourth Proportional to 399,500.66, 599,170.16 and 146,694.38

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Solution

The fourth proportional to 399,500.66, 599,170.16 and 146,694.38 is: 220,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,500.66 : 599,170.16 = 146,694.38 : x
  2. Step 2: Convert to fraction form
    399,500.66/599,170.16 = 146,694.38/x
  3. Step 3: Cross multiply
    399,500.66x = 599,170.16 × 146,694.38
  4. Step 4: Simplify right side
    399,500.66x = 87,894,895,135.70
  5. Step 5: Solve for x
    x = 87,894,895,135.70/399,500.66
  6. Step 6: Final answer
    x = 220,011.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.